CN102549996B - Apparatus and method for transceiving signals using frame structure in wireless communication system - Google Patents
Apparatus and method for transceiving signals using frame structure in wireless communication system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2604—Multiresolution systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2603—Signal structure ensuring backward compatibility with legacy system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/26035—Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences
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Abstract
A method and apparatus for transceiving signals using a predetermined frame structure in a wireless communication system is provided. The apparatus includes a Radio Frequency (RF) unit for transceiving a signal through a frame according to the predetermined frame structure. The frame includes 5 subframes, the 5subframe comprise type-1 subframes including 6 Orthogonal Frequency Division Multiplex Access (OFDMA) symbols and type-2 subframes including 7 OFDMA symbols, and a Cyclic Prefix (CP) length of the frame corresponds to 1/8 of an effective symbol length.
Description
Technical field
The present invention relates to a kind of wireless communication system, more specifically, relate to a kind of apparatus and method of utilizing frame structure receiving and transmitting signal in wireless communication system.
Background technology
Institute of Electrical and Electric Engineers (IEEE) 802.16m system had both supported to comprise Frequency Division Duplexing (FDD) (FDD) scheme of Half-Frequency Division Duplex (H-FDD) travelling carriage (MS) operation scheme, also supported time division duplex (TDD) scheme.
Described 802.16m system utilizes OFDM (OFDMA) scheme as the multiple access scheme in down link and up link.
Be the concise and to the point description of the frame structure to IEEE 802.16m system below, wherein IEEE 802.16m system is typical mobile communication system.
Fig. 1 is exemplified with the basic frame structure of IEEE 802.16m system.
As shown in Figure 1, the superframe of each 20ms is divided into the radio frames of four 5ms with formed objects and starts with super-frame header (SFH).In the time of use in 5MHz, 10MHz and 20MHz channel width one, the radio frames of each 5ms comprises 8 subframes.A subframe can be allocated for downlink transfer or uplink.
As three kinds of the IEEE 802.16m system uses of typical mobile communication system or the subframe of more kinds of types.The subframe of Class1 comprises 6 OFDMA symbols, and the subframe of type 2 comprises 7 OFDMA symbols, and the subframe of type 3 comprises 5 OFDMA symbols.
This basic frame structure had both been applicable to comprise the FDD scheme of H-FDD MS operation scheme, was also applicable to TDD scheme.In TDD system, the quantity of the switching point in each radio frames is 2.Switching point can be according to changing to define from downstream-to-upstream or from being up to descending direction.
H-FDD travelling carriage (MS) can be included in FDD system, and the frame structure of H-FDD MS is similar to tdd frame structure.But in FDD system, downlink transfer and uplink are to carry out in two frequency ranges of separating.Transtation mission circuit and receiving circuit need to switch in the transmission gap between downlink transfer and uplink and the transmission gap between downlink transfer and uplink.
Except the basic frame structure of IEEE 802.16m system, a kind of frame structure having for 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width is not yet proposed.
Summary of the invention
Technical problem
For a kind of device that utilizes frame structure sending and receiving signal at wireless communication system that the object of the invention is to of dealing with problems.
Be a kind of method of utilizing frame structure sending and receiving signal at wireless communication system for the another object of the present invention of dealing with problems.
Object of the present invention be not limited to described above those, those skilled in the art will be expressly understood other objects from the following description.
The solution of problem
Object of the present invention can be by providing a kind of device that utilizes predetermined frame structure receiving and transmitting signal in wireless communication system to realize, this device comprises: radio frequency (RF) unit, it is for by carrying out receiving and transmitting signal according to the frame of described predetermined frame structure, wherein said frame comprises 5 subframes, described 5 subframes comprise the Class1 subframe that comprises 6 OFDM (OFDMA) symbol and type 2 subframes that comprise 7 OFDMA symbols, and the length of the Cyclic Prefix (CP) of wherein said frame is equivalent to 1/8 of significant character length.
Described frame can be time division duplex (TDD) frame or Frequency Division Duplexing (FDD) (FDD) frame.
Described tdd frame can comprise 2 Class1 subframes and 3 type 2 subframes.
Described tdd frame can comprise lower between-line spacing and the upper between-line spacing after this lower between-line spacing, and send change gap (TTG) interval can described lower between-line spacing and described between between-line spacing, and receive after change gap (RTG) interval can be positioned at the last subframe of described upper between-line spacing.
The quantity of the descending sub frame in described tdd frame can be 3: 2 or 2: 3 with the ratio of the quantity of sub-frame of uplink.
Described tdd frame can comprise 2 Class1 subframes and 3 type 2 subframes.
Preferably, the symbol that is assigned to described TTG interval or described RTG interval is positioned at first symbol place of first sub-frame of uplink of described tdd frame.Here, first sub-frame of uplink of tdd frame can comprise 7 symbols, but one of them symbol of first sub-frame of uplink of tdd frame is assigned to change gap.Therefore, first sub-frame of uplink of tdd frame is the Class1 subframe that comprises 6 symbols.
Described frame can have 7MHz channel width, and described tdd frame can comprise 33 OFDMA symbols, and described FDD frame can comprise 34 OFDMA symbols.
In another aspect of this invention, a kind of method of utilizing predetermined frame structure sending and receiving signal in wireless communication system is provided here, the method comprises: by carrying out receiving and transmitting signal according to the frame of described predetermined frame structure, wherein said frame comprises 5 subframes, described 5 subframes comprise the Class1 subframe that comprises 6 OFDM (OFDMA) symbol and type 2 subframes that comprise 7 OFDMA symbols, and Cyclic Prefix (CP) length of wherein said frame is equivalent to 1/8 of significant character length.
Described frame can be time division duplex (TDD) frame or Frequency Division Duplexing (FDD) (FDD) frame.
Described tdd frame can comprise 2 Class1 subframes and 3 type 2 subframes.
Described tdd frame can comprise lower between-line spacing and the upper between-line spacing after described lower between-line spacing, and send change gap (TTG) interval can described lower between-line spacing and described between between-line spacing, and receive after change gap (RTG) interval can be positioned at the most individual subframe of described upper between-line spacing.
The quantity of the descending sub frame in described tdd frame can be 3: 2 or 2: 3 with the ratio of the quantity of sub-frame of uplink.
Preferably, the symbol that is assigned to described TTG interval or described RTG interval is positioned at first symbol place of first sub-frame of uplink of described tdd frame.Here, first sub-frame of uplink of tdd frame can comprise 7 symbols, but one of them symbol of first sub-frame of uplink of tdd frame is assigned to change gap.Therefore, first sub-frame of uplink of tdd frame is the Class1 subframe that comprises 6 symbols.
Described frame can have 7MHz channel width, and described tdd frame can comprise 33 OFDMA symbols, and described FDD frame can comprise 34 OFDMA symbols.
The beneficial effect of the invention
According to the present invention, can effectively utilize the frame structure having for 1/8 the CP length that is equivalent to significant character length of 7MHz channel width and carry out sending and receiving signal.
In addition, according to the present invention, can effectively utilize a kind of according to of the present invention have be equivalent to the CP length of significant character length 1/8 and be designed to coexist with the frame structure with other CP length and do not conflict with the frame structure with other CP length and the frame structure that disturbs carrys out sending and receiving signal.
Advantage of the present invention be not limited to described above those, those skilled in the art will be expressly understood other advantages from the following description.
Brief description of the drawings
It is for a further understanding of the present invention is provided that accompanying drawing is included, and it is used for explaining principle of the present invention exemplified with embodiments of the present invention and together with specification.
In the drawings:
Fig. 1 is exemplified with the basic frame structure in IEEE 802.16m system.
Fig. 2 is exemplified with the example of the symbolic construction that comprises Cyclic Prefix (CP).
Fig. 3 is exemplified with the typical tdd frame structure having in the IEEE 802.16m system as typical mobile communication system for 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width.
Fig. 4 is exemplified with the typical FDD frame structure having in the IEEE 802.16m system as typical mobile communication system for 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width.
Fig. 5 is exemplified with the typical frame structure for the CP length of the 1/8Tb of 7MHz channel width that has in the IEEE 802.16m system according to the present invention.
Fig. 6 is exemplified with the typical tdd frame structure of supporting legacy mode.
Fig. 7 is exemplified with according to the block diagram of the parts of signal transceiver of the present invention.
Preferred forms of the present invention
With reference now to accompanying drawing, the preferred embodiment of the present invention is described in detail.The detailed description providing below with reference to accompanying drawing is intended to illustrate illustrative embodiments of the present invention, instead of the only execution mode that can implement according to the present invention is shown.Detailed description below comprises detail to complete understanding of the present invention is provided.But, it will be apparent to those skilled in the art that the present invention can implement such detail in the case of not having.For example, although description is below to be the situation of third generation partner program Long Term Evolution (3GPPLTE) system and providing in detail with reference to mobile communication system, but for 3GPP LTE, description below can also be applied to any other mobile communication system except specially.
In some instances, omit or shown known construction and device in block diagram form, focus is concentrated on the key character of construction and device, thereby can not obscure concept of the present invention.In whole specification, will represent same or similar part with identical reference marker.
In the following description, term " travelling carriage (MS) " is generally for describing subscriber equipment any movement or fixing, for example subscriber equipment (UE) or advanced mobile platform (AMS).In addition, term " base station (BS) " is generally for example, for describing any network node that can communicate with MS, Node B, eNodeB or access point (AP).
In a mobile communication system, MS can receive information and can send information to BS in up link from BS at down link.The information that is sent or received by MS comprises data and various control information.Type and the purposes of the information that sends or receive according to MS provide multiple physical channel.
In the 3GPP of the example as mobile communication system LTE system, use OFDM (OFDM) as multi carrier modulation scheme.The concise and to the point description of the general principle to OFDM scheme below.
In ofdm system, high-rate data stream is divided into a large amount of rate data streams to utilize multiple carrier waves to send these rate data streams simultaneously.Each in these multiple carrier waves is called to " subcarrier ".Therefore, between the subcarrier in ofdm system, have orthogonality, even in the time that the frequency component of subcarrier is overlapped, receiver side also can detect subcarrier.Can high-rate data stream be converted to multiple parallel low rate data streams by deserializer, and these parallel low rate data streams can double by corresponding subcarrier, then merge and send to receiver side.
Utilize inverse discrete Fourier transform (IDFT), the parallel data stream being generated by deserializer can send by multiple subcarriers.Utilize inverse fast Fourier transform, can effectively realize IDFT.Owing to having increased the symbol duration of each low speed subcarrier, therefore reduce by multi-path delay and expanded the relative signal scattering of the each low speed subcarrier causing in time domain.
Can between OFDM symbol, insert than the longer protection interval of channel delay expansion, so that lower the intersymbol interference in the wireless communication system that utilizes OFDM scheme.Particularly, in sending each symbol by multi-path channel, between continuous symbol, insert than the longer protection interval of maximum channel time delay expansion.Here, in the last part of the significant character duration of symbol, the signal of (, in protection interval) is replicated and is inserted into the beginning of this symbol, so that prevent from losing the orthogonality between subcarrier.The part of this insertion is called as " Cyclic Prefix (CP) ".
Fig. 2 is exemplified with the example of the symbolic construction that comprises Cyclic Prefix (CP).
With reference to Fig. 2, symbol period Ts is protection interval T g and the significant character duration Tb sum of carrying data.Receiver side is by removing the protection interval T g of symbol and extracting data and carry out this symbol of rectification from significant character duration wherein.Transmitter side and receiver side can utilize CP code to realize the orthogonality between synchronous and maintenance data symbol.The term " symbol " using in the present invention refers to OFDMA symbol.
Fig. 3 is exemplified with the typical tdd frame structure for 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width that has in the IEEE 802.16m system as typical mobile communication system.
As shown in Figure 3, in this typical tdd frame structure, in a frame, the quantity of descending sub frame can be 4: 2 with the ratio of sub-frame of uplink quantity.Tdd frame can have 7MHz channel width and have 1/8 the CP length that is equivalent to significant character length T b.
In 6 subframes that comprise at a frame, 3 subframes can be Class1 subframes, and each comprises 6 symbols, and 3 remaining subframes can be type 3 subframes, and each comprises 5 symbols.Here second, third that arrange in chronological order in a frame, and the 4th subframe can be type 3 subframes.
As can be seen from Figure 3, being positioned at from the length of the transmission change gap (TTG) of downstream-to-upstream change-over time can be 188 μ s, and the length that is positioned at the reception change gap (RTG) from being up to the down conversion time can be 60 μ s.
Fig. 4 is exemplified with the typical FDD frame structure having in the IEEE 802.16m system as typical mobile communication system for 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width.
As shown in Figure 4, in this typical FDD frame structure, FDD frame can have 7MHz channel width and have 1/8 the CP length that is equivalent to significant character length T b.
In 6 subframes that comprise at a frame, 4 subframes can be Class1 subframes, and each comprises 6 symbols, and 2 remaining subframes can be type 3 subframes, and each comprises 5 symbols.Here second, third that arrange in chronological order in a frame, and the 4th subframe can be type 3 subframes.
As mentioned above, having of illustrating respectively in Fig. 3 and Fig. 4 can containing type 1 subframe and type 3 subframes for each in tdd frame structure and the FDD frame structure of 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width, wherein each Class1 subframe comprises 6 symbols, and each type 3 comprises 5 symbols.Therefore, shown in Fig. 3 and Fig. 4, there is the ascending control channel for a kind of newtype of frame structure needs of 1/8 the CP length that is equivalent to significant character length T b of 7MHz channel width, this channel comprises 5 symbols in up region, and this is because these frame structure containing type 3 subframes.But, because current control channel is only made up of Class1 subframe, be therefore difficult to utilize the frame structure shown in Fig. 3 and Fig. 4 to send control information smoothly.
Table 1 is below exemplified with the OFDMA parameter that is applied to IEEE 802.16m system, and wherein IEEE 802.16m system is a typical mobile communication system.
[table 1]
Table 2 has below been illustrated other OFDMA parameters except in table 1.
[table 2]
The following describes as thering is respectively the frame structure (tdd frame structure and FDD frame structure) for 1/8 the CP length (being the CP length of 1/8Tb) that is equivalent to significant character length T b of the 7MHz channel width in IEEE 802.16m system in the IEEE 802.16m system of typical mobile communication system.
In addition, will describe the tdd frame structure proposing in the present invention below, this tdd frame structure can coexist with having for the CP length of 1/8Tb of identical 7MHz channel width or the frame structure of the CP length of 1/16Tb.The FDD frame structure of multiple features that the tdd frame structure that has and propose in the present invention is identical has also been described below.
Having for TDD and the FDD frame structure of the CP length of the 1/8Tb of 7MHz channel width in the IEEE 802.16m system that the present invention proposes has above-mentioned table 1 and the defined OFDMA parameter of table 2.Having for the frame structure of the CP length of the 1/8Tb of 7MHz channel width in the IEEE 802.16m system that the present invention proposes has the feature identical with basic frame structure and can coexist with the frame structure for example, with other CP length (, for the 1/16Tb of 7MHz channel width CP length).Having for the frame structure of the CP length of the 1/8Tb of 7MHz channel width in the IEEE 802.16m system that the present invention proposes can be constructed to make them at the border between uplink and downlink (or transfer point) not and to have the border between uplink and downlink of frame structure of other CP length overlapping.Therefore, having for the frame structure of the CP length of the 1/8Tb of 7MHz channel width and thering is non-interference between the frame structure of other CP length in the IEEE 802.16m system that the present invention proposes, thus can coexist with the frame structure with other CP length.
Fig. 5 is exemplified with the typical frame structure for the CP length of the 1/8Tb of 7MHz channel width that has in IEEE 802.16m system according to the present invention.
Fig. 5 (a) adopts the OFDMA parameter in table 1 and table 2 to the TDD shown in Fig. 5 (c) and FDD frame structure.As shown in Table 1 and Table 2, when the frame structure of CP length with 1/8Tb during for 7MHz channel width, defined OFDMA parameter " symbol duration ", " TTG " and " RTG " are respectively 144 μ s, 188 μ s and 60 μ s.
Fig. 5 (a) and Fig. 5 (b) are exemplified with the tdd frame structure for the CP length of the 1/8Tb of 7MHz channel width that has of IEEE 802.16m system.As shown in Fig. 5 (a) and Fig. 5 (b), in the tdd frame that comprises 5 subframes, the quantity of descending sub frame can be 2: 3 or 3: 2 with the ratio of the quantity of sub-frame of uplink.
As shown in Fig. 5 (a) and Fig. 5 (b), tdd frame can be made up of the subframe including Class1 subframe and type 2 subframes, wherein each Class1 subframe comprises 6 OFDMA symbols, each type 2 subframe comprises 7 OFDMA symbols, thereby in up region, does not generate the control channel being made up of 5 OFDMA symbols.
Consider defined OFDMA parameter, can find out, when use the CP length of 1/8Tb in FDD frame time, the quantity of the OFDMA symbol that FDD frame comprises is 34.But, according to of the present invention have for the tdd frame structure of the CP length of the 1/8Tb of 7MHz channel width need TTG/RTG interval to switch between descending and up.Therefore, can be by an allocation of symbols to TTG/RTG.The quantity of the symbol of tdd frame is 33, few one than the quantity of the symbol of FDD frame, this be because in tdd frame by an allocation of symbols to TTG/RTG.
A tdd frame can comprise 5 subframes.Particularly, a tdd frame can comprise 2 Class1 subframes and 3 type 2 subframes.TTG/RTG interval can be assigned to the first sub-frame of uplink in tdd frame.For this reason, type 2 subframes can be positioned at the position of this first uplink sub-frames.A symbol distributing to TTG/RTG interval is positioned at the first character position place of this first uplink sub-frames.Because a symbol of type 2 subframes of this first uplink sub-frames position is assigned to TTG/RTG interval, therefore this first uplink sub-frames has with Class1 subframe structure and has the form that essence is identical.
As shown in Fig. 5 (a) and Fig. 5 (b), in tdd frame, Class1 subframe can only be positioned at the first descending sub frame position and the first sub-frame of uplink position.In tdd frame structure, the symbol quantity of distributing to down link can be expressed as 6+7* (M-1) and 6+7* (N-1) with the symbol quantity of distributing to up link, wherein M is the quantity of distributing to the subframe of down link, and N is the quantity of distributing to the subframe of up link.
As shown in the frame structure of Fig. 5 (c), because FDD frame does not need TTG/RTG, therefore the quantity of the symbol in FDD frame is 34.FDD frame can be made up of the Class1 subframe in basic frame structure and type 2 subframes, wherein each Class1 subframe comprises 6 OFDMA symbols, each type 2 subframe comprises 7 OFDMA symbols, thereby does not generate in up region the ascending control channel being made up of 5 OFDMA symbols.In this case, a FDD frame comprises 5 subframes.
Have for a FDD frame of the CP length of the 1/8Tb of 7MHz channel width and can be formed by 34 OFDMA symbols according to of the present invention, and can be formed by 5 subframes.A FDD frame can also be made up of a Class1 subframe and four type 2 subframes.Here, Class1 subframe can be arranged in chronological order in the subframe position in first in FDD frame.
Fig. 6 is exemplified with the typical tdd frame structure of leaving over support mode.
Legacy System is the legacy system of following traditional standard.IEEE 802.16e system is an example of Legacy System.But Legacy System is not limited to IEEE 802.16e system.From legacy system evolution and come new system can be arranged on the region that Legacy System is installed.In this case, new system not only needs to support to leave over MS, also needs to support new MS.Fig. 6 is exemplified with the tdd frame structure of defined support legacy mode in IEEE 802.16m system.
As shown in Fig. 6 (a), in order to support Legacy System, need to give up region by 12 allocation of symbols.In addition, the conversion interval of downstream-to-upstream need to be positioned at the first sub-frame of uplink place., TTG can be positioned at the first sub-frame of uplink place.
As shown in Fig. 6 (a), because the first sub-frame of uplink comprises 7 OFDMA symbols (wherein comprising an idle interval) altogether, therefore this first sub-frame of uplink can be considered as to type 2 subframes.But, because a symbol of the first sub-frame of uplink is retained for generating the required conversion interval (or delay interval) of TTG in tdd frame, therefore the first sub-frame of uplink can be regarded substantially as to the Class1 subframe that comprises 6 symbols.That is to say, by divide the idle interval that is used in TTG in up region, frame structure shown in Fig. 6 (a) can be supported Legacy System fully, and can coexist and not disturb each other with having for the frame structure of other CP length of same channel bandwidth shown in Fig. 6 (b).No matter between the quantity of descending sub frame and the quantity of sub-frame of uplink such as what, can apply the frame structure being suggested as described above as not only supporting that Legacy System can also coexist with the frame structure with other CP length.
As mentioned above, the tdd frame structure shown in Fig. 6 (a) can coexist and not disturb each other with the frame structure for example having, for the legacy mode of other CP length of same channel bandwidth (, 7MHz).
Generally speaking, utilize the frame structure shown in Fig. 5 and Fig. 6, signal transceiver (being MS or BS) sending and receiving signal effectively, and can to signal transceiver sending and receiving signal from using other CP length, do not disturb each other and conflict.
Fig. 7 is exemplified with according to the block diagram of the parts of signal transceiver of the present invention.
As shown in Figure 7, signal transceiver 50 can be MS or BS.Signal transceiver 50 comprises processor 51, memory 52, radio frequency (RF) unit 53, display unit 54 and user interface section 55.
The layer of Radio interface protocols is realized in processor 51.Processor 51 provides chain of command and user's face.The function of these layers can realize in processor 51.Memory 52 is connected to processor 51 with storage operation system, application and generic-document.
Display unit 54 shows much information and can comprise known element, such as liquid crystal display (LCD) or Organic Light Emitting Diode (OLED).
User interface section 55 can comprise the combination such as the known users interface of keyboard and touch-screen.
RF unit 53 can be connected to processor 51 with sending and receiving wireless signal.RF unit 53 can be divided into sending module (not shown) and receiver module (not shown).
Lower three layers of open system interconnection (OSI) reference model of knowing based on the wide stranger in the communications field, can be categorized as the Radio interface protocols layer between MS and network ground floor L1, second layer L2 and the 3rd layer of L3.The physical layer that belongs to ground floor L1 provides the formation transfer service that uses physical channel.Radio Resource control (RRC) layer that is positioned at the 3rd layer provides Radio Resource to control between MS and network.MS and network exchange RRC message by rrc layer.
In enforcement best way of the present invention, numerous embodiments is described.
Above execution mode is that the mode by assembly of the present invention and Feature Combination being got up according to concrete form provides.Unless have explicit state, otherwise these assemblies or feature should be considered to be optionally.These assemblies and feature can realize not with other assemblies or Feature Combination in the situation that.Embodiments of the present invention can also provide by some that combine in these assemblies and/or feature.Aforesaid operations order in embodiments of the present invention can change.Some assemblies in an execution mode or feature can comprise in another embodiment or be replaced by the corresponding assembly in another execution mode or feature.Be apparent that, the claim that there is no specific reference relation can be combined into an execution mode or can after the application submits to, add new claim by revising.
Embodiments of the present invention can realize by the form of hardware, firmware, software or their combination in any.Realized by hardware in situation of the present invention, can realize with integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor etc. by one or more earning according to the method for utilizing predetermined frame structure sending and receiving signal of embodiment of the present invention.
When being realized in situation of the present invention by firmware or software, embodiments of the present invention can realize with the form of carrying out module, processing procedure, function of above-mentioned feature or operation etc.Software code can be stored in memory cell to carried out by processor.Memory cell can be positioned at inside or the outside of processor, and can transmit data by multiple known means and processor.
It will be understood by those skilled in the art that the present invention can implement according to other particular forms except above-mentioned those forms in the situation that not departing from the present invention's spirit and inner characteristic.Therefore, above description all should be interpreted as illustrative rather than restrictive in all respects.Scope of the present invention should be determined by the reasonable dismissal of appended claim, and falls into all changes in equivalency range of the present invention by within the scope of the invention involved.
Industrial applicibility
Utilize the apparatus and method of frame structure receiving and transmitting signal to be applicable to wireless communication systems such as IEEE 802,3GPP LTE, LTE-A.
Claims (15)
1. the method for receiving and transmitting signal in wireless communication system, the method comprises:
By frame receiving and transmitting signal,
Wherein, described frame comprises 5 subframes, described 5 subframes are made up of at least one Class1 subframe and at least one type 2 subframe, each subframe in wherein said at least one Class1 subframe comprises 6 OFDM OFDMA symbols, and the each subframe in described at least one type 2 subframe comprises 7 OFDMA symbols, the cyclic prefix CP length of wherein said frame is equivalent to 1/8 of significant character length, and
Wherein, a Class1 subframe in described at least one Class1 subframe is chronological the first subframe position in described 5 subframes, and type 2 subframe in described at least one type 2 subframe are with adjacent in a described Class1 subframe of described the first subframe position.
2. method according to claim 1, wherein, described frame is TDD frame or FDD frame.
3. method according to claim 2, wherein, described frame is tdd frame, and described tdd frame comprises 2 Class1 subframes and 3 type 2 subframes.
4. method as claimed in claim 3, wherein, described tdd frame comprises lower between-line spacing and the upper between-line spacing after described lower between-line spacing, send change gap TTG and be located at interval between described lower between-line spacing and described upper between-line spacing, after reception change gap RTG is located at interval at the last subframe of described upper between-line spacing.
5. method according to claim 3, wherein, the quantity of the descending sub frame in described tdd frame is 3:2 or 2:3 with the ratio of the quantity of sub-frame of uplink.
6. method according to claim 4, wherein, the symbol that is assigned to described TTG interval or described RTG interval is positioned at first symbol place of first sub-frame of uplink of described tdd frame.
7. method according to claim 6, wherein, described first sub-frame of uplink of described tdd frame is Class1 subframe.
8. method according to claim 2, wherein, described frame has 7MHz channel width.
9. method according to claim 2, wherein, described tdd frame comprises 33 OFDMA symbols, and described FDD frame comprises 34 OFDMA symbols.
10. the device of receiving and transmitting signal in wireless communication system, this device comprises:
Radio frequency unit, it passes through frame receiving and transmitting signal,
Wherein, described frame comprises 5 subframes, described 5 subframes are made up of at least one Class1 subframe and at least one type 2 subframe, each Class1 subframe in wherein said at least one Class1 subframe comprises 6 OFDM OFDMA symbols, and each type 2 subframes in described at least one type 2 subframe comprise 7 OFDMA symbols, the cyclic prefix CP length of wherein said frame is equivalent to 1/8 of significant character length, and
Wherein, a Class1 subframe in described at least one Class1 subframe is chronological the first subframe position in described 5 subframes, and type 2 subframe in described at least one type 2 subframe are with adjacent in a described Class1 subframe of described the first subframe position.
11. devices according to claim 10, wherein, described frame is TDD frame or FDD frame.
12. devices according to claim 11, wherein, described frame is tdd frame, and described tdd frame comprises 2 Class1 subframes and 3 type 2 subframes.
13. devices according to claim 12, wherein, described tdd frame comprises lower between-line spacing and the upper between-line spacing after described lower between-line spacing, send change gap TTG and be located at interval between described lower between-line spacing and described upper between-line spacing, after reception change gap RTG is located at interval at the last subframe of described upper between-line spacing.
14. devices according to claim 12, wherein, the quantity of the descending sub frame in described tdd frame is 3:2 or 2:3 with the ratio of the quantity of sub-frame of uplink.
15. devices according to claim 13, wherein, the symbol that is assigned to described TTG interval or described RTG interval is positioned at first symbol place of first sub-frame of uplink of described tdd frame.
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| US23730409P | 2009-08-27 | 2009-08-27 | |
| US61/237,304 | 2009-08-27 | ||
| KR1020100064890A KR101769364B1 (en) | 2009-08-27 | 2010-07-06 | The apparatus and method for transceiving signal in a wireless communication system |
| KR10-2010-0064890 | 2010-07-06 | ||
| PCT/KR2010/005791 WO2011025303A2 (en) | 2009-08-27 | 2010-08-27 | Apparatus and method for transceiving signals using frame structure in wireless communication system |
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| CN102549996A CN102549996A (en) | 2012-07-04 |
| CN102549996B true CN102549996B (en) | 2014-09-17 |
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| CN201080038401.6A Expired - Fee Related CN102549996B (en) | 2009-08-27 | 2010-08-27 | Apparatus and method for transceiving signals using frame structure in wireless communication system |
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| EP (1) | EP2471233B1 (en) |
| JP (1) | JP5639175B2 (en) |
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| CN (1) | CN102549996B (en) |
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| WO2013033918A1 (en) * | 2011-09-09 | 2013-03-14 | Renesas Mobile Corporation | A method, an apparatus and a computer program product for flexible tdd configuration |
| US10382270B2 (en) * | 2014-09-25 | 2019-08-13 | Lg Electronics Inc. | Method and MTC device for receiving downlink channel |
| CN107113077B (en) * | 2014-12-23 | 2019-07-26 | Lg电子株式会社 | For the method for uplink transmission in unlicensed frequency band and use the equipment of this method |
| JP6710142B2 (en) * | 2016-10-26 | 2020-06-17 | 株式会社日立製作所 | Control system |
Citations (1)
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| CN1965513A (en) * | 2004-05-01 | 2007-05-16 | 桥扬科技有限公司 | Methods and apparatus for communication with time-division duplexing |
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| KR101520667B1 (en) * | 2007-09-10 | 2015-05-18 | 엘지전자 주식회사 | Allocation method of pilot subcarriers in mimo system |
| US20090109960A1 (en) * | 2007-10-30 | 2009-04-30 | Motorola, Inc. | Method and apparatus for a virtual circuit data area within a packet data frame |
| WO2009102180A1 (en) * | 2008-02-17 | 2009-08-20 | Lg Electronics Inc. | Method of communication using frame |
| US8761303B2 (en) * | 2008-11-13 | 2014-06-24 | Qualcomm Incorporated | Unequal multipath protection of different frames within a superframe using different cyclic prefix lengths |
| KR20100070279A (en) * | 2008-12-17 | 2010-06-25 | 이용석 | Method for operating femto-cell in wireless communication system |
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- 2010-07-06 KR KR1020100064890A patent/KR101769364B1/en active IP Right Grant
- 2010-08-27 CN CN201080038401.6A patent/CN102549996B/en not_active Expired - Fee Related
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| CN1965513A (en) * | 2004-05-01 | 2007-05-16 | 桥扬科技有限公司 | Methods and apparatus for communication with time-division duplexing |
Non-Patent Citations (2)
| Title |
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| La Jolla.OVERVIEW OF IEEE P802.16m TECHNOLGY AND CANDIDATE RIT FOR IMT-ADVANCED.《IEEE 802.16 IMT-Advanced Evaluation Group Coordination Meeting》.2010,全文. |
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Also Published As
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|---|---|
| WO2011025303A3 (en) | 2011-05-19 |
| US8542570B2 (en) | 2013-09-24 |
| CN102549996A (en) | 2012-07-04 |
| EP2471233A4 (en) | 2013-09-25 |
| WO2011025303A2 (en) | 2011-03-03 |
| JP5639175B2 (en) | 2014-12-10 |
| JP2013503549A (en) | 2013-01-31 |
| EP2471233B1 (en) | 2015-10-14 |
| KR20110022527A (en) | 2011-03-07 |
| EP2471233A2 (en) | 2012-07-04 |
| KR101769364B1 (en) | 2017-08-18 |
| US20110051632A1 (en) | 2011-03-03 |
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